William banceoft



(No Model.)

W, BA'NCROFT. LIFTING WIRE FORVSTOP MOTIONS 0F WARPING MACHINES. No. 368,050. Paten-ted Aug. 9, 1887.

N', PETERS,RhbmaLixhagmplmrwnshingml. D. c.

, UNITEDN STATES PATENT OEEICE.

VIL'LIAM BANOROFT, OF HOPEDALE, MASSACHUSETTS, ASSIGNOE OF ONE- HALF TO THE HOPEDALE MACHINE COMPANY, OF SAME PLAGE.

LlFTlNG-WIRE FOR STOP- MOTIONS OF WARPlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 368,050, dated August 9, l 887.

Application filed August 3l, 1856. Serial No. 212,317. (No model.)

To all whom, it may concern.-

Be it known that I, WILLIAM BANoRoET, of I-Iopedale, county of Vorcester, and State of lllassachusetts,have invented an Improvement vIo in Lifting-Vires for Stop-Motions of VVarping-Machines, of which the following description, in connection with the accompanying drawings, is a specilicatiom'like letters on the drawings representing like parts.

Prior to my invention drop-wires in warping machines have been suspended by the threads so as to drop bodily, or being pivoted betweentheir ends have one end drop when a thread breaks, a droppedwire forming an impediment to the movement of a vibrator or other moving bar or rod, the arresting of the bar or rod effecting through other mechanism the stopping of the machine. In this myinvention the wires, one for each thread, Vare held down by the thread when unbroken; but upon the breakage of a thread the wire islifted bodily, and hence each thread is controlled by a liftingwire rather than by a drop-wire, as heretofore.

In some prior inventions, where the dropwires `are made as weighted levers pivoted be-.

tween theirvends,when the thread breaks, the thread-holdingl end rises,owin g to the superior weight of the weighted.end, which co-operates with the vibrator. The levers or drop-wires have theirloads integral therewith. Allthese pivoted devices work in the arc of a circle. In my invention the drop-wire, or, as'herein designated, the lifting-wire, is lifted bodily when the thread breaks by lifting devices applied thereto detachably instead of integrally, as heretofore, and rises vertically in a right line, so as to bring its heel into position'to arrest the vibrator'and display its eye above the threads. These Wires may thus be replaced when Worn or broken by detaching them from' their lifting devices and applying new wires to the old lifting devices, thus obviating the expense of replacing the entire devices, as heretofore necessary.

Myinvention consists,therefore, in a dropwire,7 so called, or, as herein called, a liftingwire, having a bodily movement in a vertical right line to bring its heel into position to arrest the vibrator and display its eye above the threads, combined with a guide box or frame and a detachable lifting device, asIwill now proceed to particularly set forth and claim.

Figure 1, in section, shows a sufficient porvtion of a warping-machine with my improvedlifting wires or rods added to enable my invention to be understood; and Figs. 2 and 3, modifications, to be described.

The frame-work A, guide-box B, and rolls C and D are and may be of any usual construction.

The vibrator E, consisting, essentially/gef an oscillating shaft, e, having two or more arms, e', carrying along bar, e2, and having an arm, e, to be connected with some moving part of the machine to actuate the vibrator, is substantially like the vibrator shown in United States PatentiNo. 266,380, to which reference may be had, the said Vibrator being moved in like manner.

My improved lifting wires or rods a a are arranged to slide vertically in holes Vor slots niadein the guide-box B.

Each lifting wire has at itsl upper end a guideeye, 2, through which is extended one4 of the threads of the warps being handled, each of the said threads, until broken, acting to keep down a lifting-rod, as shown by the full-line position of the lifting wire or rod a and the dottedline position of the wire or rod a',- but as soon as a thread breaks, the lifting wire or rod held down by it is lifted, as in the full-line position of the wire or rod a and the dotted-line positionof the wire or rod a. Each wire or rod a is provided with a heel, b, and each wire or rod a with aheel, b', the eleva tion of any one of the 'said lifting wires or rods placing its heel in the range of movement of and so as to be struck by the vibrator,the arrest of the vibrator effecting in usual manner the stopping of the machine. i

In Fig. l each lifting wire or rod has connected with it one end of a lifting device, f, shown as a lever pivoted atf, the long arm of the said lever being just enough heavier than the short arm as to overcome the weight of the lifting Wire or rod, so that when a thread holding the lifting wire or rod down is broken the lifting device lifts or thrusts vertically up- IOO ward the wire or rod the thread of which is broken.

Lifting the wires or rods instead of letting.;` theln drop, as heretofore, is a matter of very considerable importance, 'for thereby the location of the broken thread may be more easily detected and the thread may be more readily and quickly applied,as the eye to receive the thread is elevated above the mass of unbroken threads and kept in plain sight.

As an obvious equivalent the lifting device might be a cord connected with the lifting wire or rod and provided with a weight or equivalent, as in Fig. 2; or a spring might be used, as in Fig. 3, the spring being of such strength and so located as to press upward with but slight force the said wires or rods, so that when not held down by a thread the spring would lift them. I prefer the forni of lifting device shown in Fig. 1.

It is to be observed that in all ot' these various forms of lifting-devices the said liftingdevices are detachably applied to the lifting4 wire, in contradistinctiou to makingr the lifting devices integral with the wire, as has been practiced heretofore. By making the liftingwire detachable from its lifting device the said wire may be readily replaced when worn or broken, and the old lifting device used with a new wire.

In the drawings, r represents a part of the usual reed.

I claim- The guide box or frame, combined with a series of lifting wires or rods, each havinga vertical bodily movement in a right line in said box or frame, and provided with an eye to receive the thread, and automatically-opering detachable lifting devices, substantially as described, for said wires or rods, acting to normally lift said wires or rods bodily as their threads b reak o r rnn out,substantiall y as specified.

In testimony whereof I have signed my name tothis specification in the presence oftwo subscribing witnesses.

XVILLTAM BANC VtOFT.

fi tn csses:

F. J. DU'roinn, A. \V. iliannsnm.. 

